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Post new topic Ric Bakelite Control Cavity Shielding
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Author Topic:  Ric Bakelite Control Cavity Shielding
Matthew Dawson

 

From:
Portland Oregon, USA
Post  Posted 12 Aug 2024 9:07 pm    
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I’ve noticed that my 1950’s Rickenbacker Bakelite tends to suffer from typical single-coil hum. This is especially noticeable at band volumes. Does anyone have any experience with shielding the control and/or pickup cavity on one of these guitars? Should I expect any improvement? Thanks guys.
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ajm

 

From:
Los Angeles
Post  Posted 13 Aug 2024 9:08 am    
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I have no experience with this type of guitar.

I/we also don't know of some other specifics about your playing, first off being if you are using any distortion/overdrive and if so how much.

All that said...........

Just to cut to the chase, you can try shielding the pickup cavity and/or control cavity. You won't know if it will help until you try.
However, my own personal gut feel coupled with actual experience, tells me that most of the noise that you are going to be dealing with is from the single coil pickup itself.
NOTE: I said NOISE, not HUM. They are not the same thing. Guys use "hum" as a catch all term, but they are not the same thing. In 99% of cases the problem is noise, not hum.

What you are asking about is shielding of the cavity/cavities. I have shielded the cavities of a couple of Strats that had noise cancelling pickups, but it made little to no difference. Probably because the pickups themselves are noise cancelling to begin with. I have shielded the cavities of a couple of standard single coil Strats, but once again didn't notice a lot of difference. YMMV.

However, where I have noticed a difference with shielding........

Early 60's Strats came with an aluminum shielding plate under the pickguard. At some point in the late 60's/early 70's they stopped building them that way.
At one point in time I heard an example of two Strats side by side in a quiet non-gig environment, one with a plate and one without.
The difference was absolutely noticeable. From that point on if I got a Strat, adding shielding under the pickguard was one of the first things that I did.

There are several ways to do it.
- Buy a plate.
- Use conductive paint.
- Use aluminum tape or copper tape under the pickguard. I used to use copper snail and slug tape from Home Depot/etc, but since Covid it has disappeared.

For your experiment you'll use the conductive paint or tape method.
If you use the tape method make sure that all of the pieces in whatever cavity you're working with are connected electrically, and then also connected to ground. There are several ways to do and check this.

My end of the day gut feel is: You won't know if it makes any difference until you try it. However, I think you may find that the culprit is the single coil pickup itself, and not any wiring involved.
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